The Roadster is THE best rectifier ever made in my opinion and that's all because of channel 2, but right next to it is the multiwatt reborn. I really like the little revisions they made. Honestly, I've evaluated all the hype about 90s rectifiers or whatever old revisions, blah, blah but I think it's just a con for guys with decades old Mesa Boogies to get way more money than they're worth. They all sound good. Funny thing is, you'll hear criticisms from the same guys about "icepick" highs, low end flub, and so on.
Personally, I think it's like those vintage Marshall purists who want to fight to the death about vintage plexis, except when they finally plug one into something other than the same crusty 1960s cab they inherited from their great uncle, then they meltdown as their brain schema struggles to reconstruct.
These days, they're so stinking expensive that you should just take the best deal on the best condition rectifier you can find and go enjoy because I tell you, you're not going to be missing xx revision or what not.